Implement computed attributes

1 files changed, 199 insertions, 0 deletions

diff --git a/src/org/traccar/database/AttributesManager.java b/src/org/traccar/database/AttributesManager.java
new file mode 100644
index 000000000..362d6130f
--- /dev/null
+++ b/src/org/traccar/database/AttributesManager.java
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 Andrey Kunitsyn (andrey@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.database;
+
+import java.sql.SQLException;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.traccar.Context;
+import org.traccar.helper.Log;
+import org.traccar.model.AttributePermission;
+import org.traccar.model.Attribute;
+import org.traccar.model.Device;
+import org.traccar.model.DeviceAttribute;
+import org.traccar.model.GroupAttribute;
+
+public class AttributesManager {
+
+    private final DataManager dataManager;
+
+    private final Map<Long, Attribute> attributes = new ConcurrentHashMap<>();
+    private final Map<Long, Set<Long>> deviceAttributes = new ConcurrentHashMap<>();
+    private final Map<Long, Set<Long>> deviceAttributesWithGroups = new ConcurrentHashMap<>();
+    private final Map<Long, Set<Long>> groupAttributes = new ConcurrentHashMap<>();
+    private final Map<Long, Set<Long>> userAttributes = new ConcurrentHashMap<>();
+
+    public AttributesManager(DataManager dataManager) {
+        this.dataManager = dataManager;
+        refreshAttributes();
+    }
+
+    public Set<Long> getUserAttributes(long userId) {
+        if (!userAttributes.containsKey(userId)) {
+            userAttributes.put(userId, new HashSet<Long>());
+        }
+        return userAttributes.get(userId);
+    }
+
+    public Set<Long> getGroupAttributes(long groupId) {
+        if (!groupAttributes.containsKey(groupId)) {
+            groupAttributes.put(groupId, new HashSet<Long>());
+        }
+        return groupAttributes.get(groupId);
+    }
+
+    public Set<Long> getDeviceAttributes(long deviceId) {
+        return getDeviceAttributes(deviceAttributes, deviceId);
+    }
+
+    public Set<Long> getAllDeviceAttributes(long deviceId) {
+        return getDeviceAttributes(deviceAttributesWithGroups, deviceId);
+    }
+
+    private Set<Long> getDeviceAttributes(Map<Long, Set<Long>> deviceAttributes, long deviceId) {
+        if (!deviceAttributes.containsKey(deviceId)) {
+            deviceAttributes.put(deviceId, new HashSet<Long>());
+        }
+        return deviceAttributes.get(deviceId);
+    }
+
+    public final void refreshAttributes() {
+        if (dataManager != null) {
+            try {
+                attributes.clear();
+                for (Attribute attribute : dataManager.getAttributes()) {
+                    attributes.put(attribute.getId(), attribute);
+                }
+            } catch (SQLException error) {
+                Log.warning(error);
+            }
+        }
+        refreshUserAttributes();
+        refresh();
+    }
+
+    public final void refreshUserAttributes() {
+        if (dataManager != null) {
+            try {
+                userAttributes.clear();
+                for (AttributePermission attributePermission : dataManager.getAttributePermissions()) {
+                    getUserAttributes(attributePermission.getUserId()).add(attributePermission.getAttributeId());
+                }
+            } catch (SQLException error) {
+                Log.warning(error);
+            }
+        }
+    }
+
+    public final void refresh() {
+        if (dataManager != null) {
+            try {
+
+                Collection<GroupAttribute> databaseGroupAttributes = dataManager.getGroupAttributes();
+
+                groupAttributes.clear();
+                for (GroupAttribute groupAttribute : databaseGroupAttributes) {
+                    getGroupAttributes(groupAttribute.getGroupId()).add(groupAttribute.getAttributeId());
+                }
+
+                Collection<DeviceAttribute> databaseDeviceAttributes = dataManager.getDeviceAttributes();
+                Collection<Device> allDevices = Context.getDeviceManager().getAllDevices();
+
+                deviceAttributes.clear();
+                deviceAttributesWithGroups.clear();
+
+                for (DeviceAttribute deviceAttribute : databaseDeviceAttributes) {
+                    getDeviceAttributes(deviceAttribute.getDeviceId())
+                        .add(deviceAttribute.getAttributeId());
+                    getAllDeviceAttributes(deviceAttribute.getDeviceId())
+                        .add(deviceAttribute.getAttributeId());
+                }
+
+                for (Device device : allDevices) {
+                    long groupId = device.getGroupId();
+                    while (groupId != 0) {
+                        getAllDeviceAttributes(device.getId()).addAll(getGroupAttributes(groupId));
+                        if (Context.getDeviceManager().getGroupById(groupId) != null) {
+                            groupId = Context.getDeviceManager().getGroupById(groupId).getGroupId();
+                        } else {
+                            groupId = 0;
+                        }
+                    }
+                }
+
+            } catch (SQLException error) {
+                Log.warning(error);
+            }
+        }
+    }
+
+    public void addAttribute(Attribute attribute) throws SQLException {
+        dataManager.addAttribute(attribute);
+        attributes.put(attribute.getId(), attribute);
+    }
+
+    public void updateAttribute(Attribute attribute) throws SQLException {
+        dataManager.updateAttribute(attribute);
+        Attribute cachedAttribute = attributes.get(attribute.getId());
+        cachedAttribute.setDescription(attribute.getDescription());
+        cachedAttribute.setAttribute(attribute.getAttribute());
+        cachedAttribute.setExpression(attribute.getExpression());
+        cachedAttribute.setType(attribute.getType());
+    }
+
+    public void removeAttribute(long computedAttributeId) throws SQLException {
+        dataManager.removeAttribute(computedAttributeId);
+        attributes.remove(computedAttributeId);
+        refreshUserAttributes();
+        refresh();
+    }
+
+    public boolean checkAttribute(long userId, long attributeId) {
+        return getUserAttributes(userId).contains(attributeId);
+    }
+
+    public Attribute getAttribute(long id) {
+        return attributes.get(id);
+    }
+
+    public final Collection<Attribute> getAttributes(Set<Long> attributeIds) {
+        Collection<Attribute> result = new LinkedList<>();
+        for (long attributeId : attributeIds) {
+            result.add(getAttribute(attributeId));
+        }
+        return result;
+    }
+
+    public final Set<Long> getAllAttributes() {
+        return attributes.keySet();
+    }
+
+    public final Set<Long> getManagedAttributes(long userId) {
+        Set<Long> attributes = new HashSet<>();
+        attributes.addAll(getUserAttributes(userId));
+        for (long managedUserId : Context.getPermissionsManager().getUserPermissions(userId)) {
+            attributes.addAll(getUserAttributes(managedUserId));
+        }
+        return attributes;
+    }
+
+}